lunelson

// two functions to deal with removing or setting units; 
// aliased to strip() and assert() respectively

@function remove-unit($n) { @return $n / ($n * 0 + 1); }
@function strip($n) { @return remove-unit($n); }

@function set-unit($n, $u) { @return remove-unit($n) * 1#{$u}; }
@function assert($n, $u) { @return set-unit($n, $u); }

.test {

lunelson

// fiddling with auto conversion between rem and px

$base-font-size: 10px;

@function rem($n) {
    @if unitless($n) {
        @return $n * 1rem;
    }
    @else if unit($n) == 'px' {
        @return $n / $base-font-size * 1rem;

lunelson

// demo of using greatest-common-denominator function to chain extensions of classes
// meant for grid width classes; would normally be done with placeholder selectors

@function gcd($n,$d) {
    $num: if($n < $d,$d,$n);
    $denom: if($n < $d,$n,$d);
	$rem: $num;
	$last_rem: $num;
	@while $rem != 0 {
		$last_rem: $rem;

lunelson

// beginning of a grid-column sizing mixin
// requires compass

@mixin g-cell($n, $d, $args...) {
    width: $n / $d * 100%;
    // @if length($args) >= 1 { position: relative; }
    @each $arg in $args {
        $dir: nth($arg,1); $p: nth($arg,2);
        @if $p == outside {
            margin-#{opposite-position($dir)}: 100%;    

lunelson

// ---
// Breakpoint (v2.0.5)
// Sass (v3.2.8)
// ---


// fiddling with auto conversion between rem and px

$base-font-size: 16;

lunelson

// ---
// Breakpoint (v2.0.5)
// Sass (v3.2.8)
// ---


@import "compass";

// grid variables
$grid-gutter: 30px !default;

lunelson

$body-blocks: p ul ol dl table pre blockquote figure img;
$heading-blocks: h1 h2 h3 h4 h5 h6;

@function proc($list) {
    $arr: unquote("#{nth($list, 1)} + &");
    @for $n from 2 through length($list) {
        $arr: append($arr, unquote(", #{nth($list,$n)} + &"));    
    }

lunelson

// automatic adjacent selector generation

$heading-blocks: h1 h2 h3 h4 h5 h6;
$other-blocks: p, ul, ol;

@mixin adjacent($list:()) {

lunelson

// advanced list operation experiments; part of a larger codebase

@function contains($list, $var)
  @return index($list, $var) != false

@function nested-contains($list, $key)

lunelson

// functions for finding sum, length and averages
// supports complex/compound lists of values
// assumes either no units or identical units

@function compound-sum($args...) {
    $sum: 0;
    @each $arg in $args {